A BIOS key lets you access BIOS. This article shows how to get the BIOS key for HP, Dell, Acer, Lenovo, MSI and Gigabyte computers.

Replace the side-panel cover on the HP Pavilion computer. Move the computer back to its installation location and reconnect all the cables and peripherals. Start the computer and wait for it to boot.

The basic input/output system manages the operation of hardware in the HP Compaq dc7800. The PC allows users to make changes to the BIOS to alter how the computer and its devices behave.

If you see the HP BIOS error 500 or 501 on starting your system and you cannot boot into Windows, the solutions explained here will help you.